Netstar Bills clients on tracking units that have expired- Service is Terrible-DON'T USE THEM !

I Have a business account with Netsar. One of my vehicles has a tracking device which has has not been working for months yet Netstar is still billing me on a month to month basis on a unit they can't track. I found out about this after checking if the nester units in my vehicles were working which I do for insurances purposes on renewal every year. I called customer care and waited a long time for the call to answered, the consultant tested my vehicles and told me both units needed to be serviced and were not sending a signal. I then called Netstar service and they said only one unit was faulty and needed replacing. I then got put through to sales and got a quote on the replacement unit. I asked them to email the quote so I could compare with other tracking companies. This all took 40 min and 3 different calls to do and no email quote was received. I emailed customer service asking for the quote and they forwarded my email to another department. Several days later no one called so I called Netstar business customer care waited 8 min for someone to answer the call and then asked to speak to a manager. I was left on hold unanswered for another 4 min and then had to call them again- I got through to a consultant and complained- I then sent an email explaining my frustration on just trying to get a unit installed in my vehicle. DONT USE NETSTAR Try and find alternative companies- Im using Car track on all my future vehicles and will never use or recommend a USELESS company like Netstar again.